Exploring energy transfer in luminescent heterometallic ruthenium-iridium ion pairs.

Here, we report the synthesis of a luminescent ion pair with the formula [Ru(dtBubpy)3][Ir(ppy)2(CN)2]2. The crystal structure of this three component, heterometallic assembly is described, along with the luminescence properties of the salt. The modulation of the energy transfer between the blue-green-emitting iridium complex and the red-emitting ruthenium complex is also discussed as a function of both medium and concentration.